package cn.byapps.sell.api.controller;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import cn.byapps.sell.config.ProjectUrlConfig;
import cn.byapps.sell.enums.ResultEnum;
import cn.byapps.sell.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;

@Controller
@RequestMapping("/wechat")
@Slf4j
public class WechatController {

	@Autowired
	private WxMpService wxMpService;

	@Autowired
	private WxMpService wxOpenService;

	@Autowired
	private ProjectUrlConfig projectUrlConfig;

	@GetMapping("/authorize")
	public String authorize(@RequestParam("returnUrl") String returnUrl) {
		// 1. 配置
		// 2. 调用方法
		String url = projectUrlConfig.getWechatMpAuthorize() + "/sell/wechat/userInfo";
		String redirectUrl = "";
		try {
			redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAuth2Scope.SNSAPI_USERINFO,
					URLEncoder.encode(returnUrl, "utf-8"));
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return "redirect:" + redirectUrl;
	}

	@GetMapping("/userInfo")
	public String userInfo(@RequestParam("code") String code, @RequestParam("state") String returnUrl) {
		WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
		try {
			wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
		} catch (WxErrorException e) {
			log.error("【微信网页授权】{}", e);
			throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
		}

		String openId = wxMpOAuth2AccessToken.getOpenId();

		return "redirect:" + returnUrl + "?openid=" + openId;
	}

	@GetMapping("/qrAuthorize")
	public String qrAuthorize(@RequestParam("returnUrl") String returnUrl) {
		String url = projectUrlConfig.getWechatOpenAuthorize() + "/sell/wechat/qrUserInfo";
		String redirectUrl = null;
		try {
			redirectUrl = wxOpenService.buildQrConnectUrl(url, WxConsts.QrConnectScope.SNSAPI_LOGIN,
					URLEncoder.encode(returnUrl, "utf-8"));
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return "redirect:" + redirectUrl;
	}

	@GetMapping("/qrUserInfo")
	public String qrUserInfo(@RequestParam("code") String code, @RequestParam("state") String returnUrl) {
		WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
		try {
			wxMpOAuth2AccessToken = wxOpenService.oauth2getAccessToken(code);
		} catch (WxErrorException e) {
			log.error("【微信网页授权】{}", e);
			throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
		}
		log.info("wxMpOAuth2AccessToken={}", wxMpOAuth2AccessToken);
		String openId = wxMpOAuth2AccessToken.getOpenId();

		return "redirect:" + returnUrl + "?openid=" + openId;
	}
}
